车辆在行驶时，脚不要搁在离合器踏板上目的是为了保护（）。
A、离合器压盘
B、离合器分离杠杆
C、离合器分离轴承
参考答案：C
She showed the visitors around the museum, the construction _____ had taken more than three years. [ ]
A. for which
B. with which
C. of which
D. to which
直肠上端在什么平面与乙状结肠相接
A．第5腰椎
B．第1骶椎
C．第2骶椎
D．第3骶椎
E．第4骶椎
